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3 years ago

How do you figure out conjecture

Mathematics

1 answer:

umka2103 [35]3 years ago

5 0

Answer:

powers like 10^2

Step-by-step explanation:

its easy

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The sum of two numbers is 73.if one of them is 40,find the other.

ICE Princess25 [194]

Answer:

Step-by-step explanation:

Let the other number = x

x + 40 = 73

Subtract 40 from both sides

x + 40 - 40 = 73 - 40

x = 33

6 0

3 years ago

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A piece of paper graph y=-3x-2

Dmitry_Shevchenko [17]

Answer:

Use an xy chart and graph the equation.

Step-by-step explanation:

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3 years ago

Kami has 7 liters of water to fill water bottles that each hold 2.8 liters. How many bottles can she fill?

Pani-rosa [81]

Kami can fill 2.5 bottles.

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3 years ago

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Tim must read 2 books from a list of 7 recommended books for his summer reading program. In how many different ways can Tim choo

Marianna [84]

There are 21 ways Tim choose 2 books from the 7 recommended book

Solution:

Given that Tim must read 2 books from a list of 7 recommended books for his summer reading program

To find: different ways can Tim choose 2 books from the 7 recommended books

This is a combination problem

A combination is a selection of all or part of a set of objects, without regard to the order in which objects are selected

The formula for combinations is:

$n C_{r}=\frac{n !}{r !(n-r) !}$

where n represents the number of items, and r represents the number of items being chosen at a time

Here we have to choose 2 books from 7 books

Therefore, n = 7 and r = 2

Substituting values in above formula, we get

$\begin{aligned}&7 C_{2}=\frac{7 !}{2 !(7-2) !}\\\\&7 C_{2}=\frac{7 !}{2 ! \times 5 !}\end{aligned}$

For a number n, the factorial of n can be written as,

$n !=n \times(n-1) \times(n-2) \dots \dots \times 2 \times 1$

Therefore, we get

$7 C_{2}=\frac{7 \times 6 \times 5 \times 4 \times 3 \times 2 \times 1}{2 \times 1 \times 5 \times 4 \times 3 \times 2 \times 1}\\\\7C_2 = 7 \times 3 = 21$

Thus there are 21 ways Tim choose 2 books from the 7 recommended book

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3 years ago

Counting the Number of Outcomes

ipn [44]

Answer:

Step-by-step explanation:

If you add all them up you get the answer 10

(This is correct cause i got this answer right hope this helps!)

5 0

3 years ago